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Original post by: Robin Walters ,

Text:

You likely need to de-register your phone first. Please follow the troubleshooting steps below:[br]

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NOTE: Handset must be in idle mode when performing the following procedures.[br]

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On the old handsets,[br]

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1. Press MENU/SELECT button then press *7890#.[br]

2. Press ▼CID or ▲DIR until it shows “TO TEST HANDSET”, then press MENU/SELECT button.[br]

3. Press ▼CID or ▲DIR until it shows “TO DE-REGISTER CLEAR”, then press MENU/SELECT button twice.[br]

4. Hold down the OFF/CANCEL button until the display shows “OUT OF RANGE OR NO POWER AT BASE” or “Press HS LOC on base 4 sec”, then press MENU/SELECT button.[br]

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After this step, please reset the handset by taking the battery out for a minute then plug the battery back in.

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